Easy downsampling via nVidia DSR - 4K @ 120hz/120fps

[ScientiaEtRatio]

1. Set your DSR factors and desired smoothness (I use 4K and 0% smoothness for the sharpest image on my 144hz 1080p panel)
2. Set your Desktop resolution to the DSR resolution you want, e.g. 3840x2160
3. Launch The Swapper--it detects the higher DSR internal rendering resolutions

This is desirable over other methods of setting custom resolutions as DSR works as an internal resolution as opposed to an external resolution, giving you the option to run the game, and others, at 4K 120/144hz.

Using a 1.45GHz GTX 980ti at 3840x2160 @ 120hz uses about 75% of my GPU power, so it is quite demanding.

[X p o t e n t i a L]

I use Nvidia DSR but for some reason this game only detects 1920x1080. I tried to change my native resolution to 3840x2160 to see if that would help but all I get is a flickering screen.
Any ideas?